/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.felix.mosgi.jmx.httpconnector.mx4j.tools.adaptor.http;
import java.io.IOException;
import java.lang.reflect.Array;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import javax.management.JMException;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanInfo;
import javax.management.ObjectName;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
/**
* GetAttributeCommandProcessor, processes a request for getting one attribute
* of a specific MBean. It also support some formats for types like Arrays
*
* @author <a href="mailto:tibu@users.sourceforge.net">Carlos Quiroz</a>
* @version $Revision: 1.1.1.1 $
*/
public class GetAttributeCommandProcessor extends HttpCommandProcessorAdaptor
{
public GetAttributeCommandProcessor()
{
}
public Document executeRequest(HttpInputStream in) throws IOException, JMException
{
Document document = builder.newDocument();
String name = in.getVariable("objectname");
String attributeVariable = in.getVariable("attribute");
String formatVariable = in.getVariable("format");
ObjectName objectName = null;
MBeanAttributeInfo targetAttribute = null;
// special case
boolean validMBean = false;
if (name != null)
{
objectName = new ObjectName(name);
if (server.isRegistered(objectName))
{
validMBean = true;
}
}
if (validMBean && attributeVariable != null)
{
validMBean = false;
MBeanInfo info = server.getMBeanInfo(objectName);
MBeanAttributeInfo[] attributes = info.getAttributes();
if (attributes != null)
{
for (int i=0;i<attributes.length;i++)
{
if (attributes[i].getName().equals(attributeVariable))
{
targetAttribute = attributes[i];
validMBean = true;
break;
}
}
}
}
if (validMBean)
{
Element root = document.createElement("MBean");
document.appendChild(root);
root.setAttribute("objectname", objectName.toString());
MBeanInfo info = server.getMBeanInfo(objectName);
root.setAttribute("classname", info.getClassName());
root.setAttribute("description", info.getDescription());
Element attribute = document.createElement("Attribute");
attribute.setAttribute("name", attributeVariable);
attribute.setAttribute("classname", targetAttribute.getType());
Object attributeValue = server.getAttribute(objectName, attributeVariable);
attribute.setAttribute("isnull", (attributeValue==null)?"true":"false");
root.appendChild(attribute);
if ("array".equals(formatVariable) && attributeValue.getClass().isArray())
{
Element array = document.createElement("Array");
array.setAttribute("componentclass", attributeValue.getClass().getComponentType().getName());
int length = Array.getLength(attributeValue);
array.setAttribute("length", "" + length);
for (int i=0;i<length;i++) {
Element arrayElement = document.createElement("Element");
arrayElement.setAttribute("index", "" + i);
if (Array.get(attributeValue, i) != null)
{
arrayElement.setAttribute("element", Array.get(attributeValue, i).toString());
arrayElement.setAttribute("isnull", "false");
}
else
{
arrayElement.setAttribute("element", "null");
arrayElement.setAttribute("isnull", "true");
}
array.appendChild(arrayElement);
}
attribute.appendChild(array);
}
else if ("collection".equals(formatVariable) && attributeValue instanceof Collection)
{
Collection collection = (Collection)attributeValue;
Element collectionElement = document.createElement("Collection");
collectionElement.setAttribute("length", "" + collection.size());
Iterator i=collection.iterator();
int j=0;
while (i.hasNext())
{
Element collectionEntry = document.createElement("Element");
collectionEntry.setAttribute("index", "" + j++);
Object obj = i.next();
if (obj != null)
{
collectionEntry.setAttribute("elementclass", obj.getClass().getName());
collectionEntry.setAttribute("element", obj.toString());
}
else
{
collectionEntry.setAttribute("elementclass", "null");
collectionEntry.setAttribute("element", "null");
}
collectionElement.appendChild(collectionEntry);
}
attribute.appendChild(collectionElement);
}
else if ("map".equals(formatVariable) && attributeValue instanceof Map)
{
Map map = (Map)attributeValue;
Element mapElement = document.createElement("Map");
mapElement.setAttribute("length", "" + map.size());
Iterator i=map.keySet().iterator();
int j=0;
while (i.hasNext())
{
Element mapEntry = document.createElement("Element");
mapEntry.setAttribute("index", "" + j++);
Object key = i.next();
Object entry = map.get(key);
if (entry != null && key != null)
{
mapEntry.setAttribute("keyclass", key.getClass().getName());
mapEntry.setAttribute("key", key.toString());
mapEntry.setAttribute("elementclass", entry.getClass().getName());
mapEntry.setAttribute("element", entry.toString());
}
else
{
mapEntry.setAttribute("keyclass", "null");
mapEntry.setAttribute("key", "null");
mapEntry.setAttribute("elementclass", "null");
mapEntry.setAttribute("element", "null");
}
mapElement.appendChild(mapEntry);
}
attribute.appendChild(mapElement);
}
else
{
attribute.setAttribute("value", attributeValue.toString());
}
}
return document;
}
}